Part of our Classic Gemstone Collection, The "Aissa" represents simple, understated elegance and timeless design with a contemporary twist. 14 mm x 16 mm of high grade whisky quartz - 11 carats in total. Choose a chain to suit you from our choker style snake chain to our 30" long cable chain. All our chains are adjustable (2 inches). The base metal of all our jewellery is 925 sterling silver. 18k gold and rose gold vermeil. Vermeil means that sterling silver is plated in at least 2.5 microns of gold or rose gold. Ours is at least 3 microns of 18k gold / rose gold which makes for a really thick coating of gold / rose gold on sterling silver.